Portion of a shoe sole



FIG. 1 is a side elevational view of a portion of a shoe sole showing my new design;

FIG. 2 is a bottom rear perspective view thereof;

FIG. 3 a bottom plan view thereof;

FIG. 4 is a bottom front perspective view thereof;

FIG. 5 is a top front perspective view thereof;

FIG. 6 is a top rear perspective view thereof; and,

FIG. 7 is a top side perspective view thereof.

The uneven broken line forms an unclaimed boundary of the design. The broken line showing of the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe sole, as shown and described. 